Which measure correctly completes the statement? 3,271.5 milligrams = ? grams

1. 0.032715 grams

2. 3.2715 grams

3. 327.15 grams

4. 32,7150 grams

aren't there 10 mg in 1 g ????

so 3,271.5 ml = 327.15 g

the bot's answer isn't even a multiple of 10 !!!

3. 2715 grams